I apologize for the unnecessary noise, but I just realized how old Debian's packaged Alacritty version is. The source package simply does not have the files in question yet, so this is NOT a valid bug.
Sorry for the waste of time.
- Bug#1110479: alacritty: Missing config file (5) manpages Christian Duerr
- Bug#1110479: Invalid bug report Christian Dürr
